So I have a Howa 1500 in .308. I put a Vortex Crossfire on it so I could get out and shoot. I definitely do not expect that to be an optic for long range shooting. I was wondering if anyone has any experience. with SWFA's 3-15 optic? Is it worth buying and learning on? I am new to long range shooting so advice is appreciated. I was looking to spend roughly $500-$1000 (at this time), other suggestions welcomed.